Applying an Improving Measurement of Cutting Force to Study Machinability of Gray Cast Iron

Abstract

In order to study the machinability of gray cast iron, the cutting force must be precision measure. An improving measurement based on strain gauge dynamometer has been proposed in this paper, the measurement changed the traditional calibration method of strain gauge dynamometer. A set of new calibration device have been designed. Use the device, the process of calibration could be made after the strain-gauge dynamometer for cutting force measuring fixed on lathe, in this way, the states of calibration and measuring in experiment achieved same, and the error of measuring which had been begot by the differ states of calibration and measuring could be eliminated. The results of experiment show that the method presented in this paper achieved high precision and low cost cutting force measuring, and the results of cutting force measuring could be used for estimating machinability of gray cast iron.